Etymology

barrelene

B3A1R1R1E1L1E1N1E1

Today it means: The bicyclic organic compound bicyclo[2.2.2]octa-2,5,7-triene Full definition →

English barrel ← Middle English barel ← Old French bari
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The story

  1. Old Frenchbari
  2. Middle Englishbarel
  3. Englishbarrel
  4. English todaybarrelene

From barrel + -ene, from the resemblance to a barrel, with the staves being three ethylene units attached to two methine groups.

Etymology from Wiktionary, CC BY-SA 4.0.